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LM4835MT
Product Overview
Category: Integrated Circuit (IC)
Use: Audio amplifier
Characteristics: - Mono Class AB audio power amplifier - Low quiescent current - Wide supply voltage range - Thermal shutdown protection - Short-circuit protection - Surface mount package
Package: 14-pin TSSOP (Thin Shrink Small Outline Package)
Essence: The LM4835MT is a mono audio power amplifier IC designed for low-power applications. It provides amplification and control functions for audio signals.
Packaging/Quantity: The LM4835MT is available in tape and reel packaging, with 2500 units per reel.
Specifications
- Supply Voltage Range: 2.7V to 5.5V
- Quiescent Current: 4 mA (typical)
- Output Power: 1.3W into 8Ω at 5V
- Total Harmonic Distortion + Noise (THD+N): 0.1% (typical) at 1kHz, 1.2W into 8Ω
- Shutdown Current: 0.01 μA (typical)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The LM4835MT has a 14-pin TSSOP package with the following pin configuration:
- SHUTDOWN
- BYPASS
- GAIN
- VDD
- IN-
- IN+
- GND
- OUT
- NC
- NC
- NC
- NC
- NC
- NC
Functional Features
- Shutdown: The SHUTDOWN pin allows the amplifier to be turned off, reducing power consumption.
- Bypass: The BYPASS pin can be used to bypass the internal gain setting and directly control the amplifier's gain.
- Gain Control: The GAIN pin sets the amplifier's gain, allowing for volume adjustment.
- Thermal Shutdown Protection: The LM4835MT has built-in thermal shutdown protection to prevent overheating.
- Short-Circuit Protection: The IC includes short-circuit protection to safeguard against damage caused by output shorts.
Advantages and Disadvantages
Advantages: - Low quiescent current consumption - Wide supply voltage range - Thermal and short-circuit protection - Small package size
Disadvantages: - Mono audio amplifier (not suitable for stereo applications) - Limited output power compared to higher wattage amplifiers
Working Principles
The LM4835MT is a Class AB audio power amplifier. It amplifies audio signals using a combination of transistors and operational amplifiers. The input audio signal is amplified and then delivered to the output speaker or load. The amplifier operates in a low-power mode when no audio signal is present, reducing power consumption.
Detailed Application Field Plans
The LM4835MT is commonly used in various low-power audio applications, including: - Portable audio devices - Mobile phones - Tablets - MP3 players - Personal computers - Gaming consoles
Alternative Models
Other alternative models that can be considered as replacements for the LM4835MT include: - LM4861 - TPA2005D1 - MAX98306 - PAM8403
These alternative models offer similar functionality and may have different specifications or package options to suit specific requirements.
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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng LM4835MT trong giải pháp kỹ thuật
Sure! Here are 10 common questions and answers related to the application of LM4835MT in technical solutions:
Q: What is LM4835MT? A: LM4835MT is a stereo audio amplifier integrated circuit (IC) that can be used in various audio applications.
Q: What is the power output of LM4835MT? A: The power output of LM4835MT is typically 2.6 Watts per channel into 4 ohms with a 5V power supply.
Q: Can LM4835MT be used in portable devices? A: Yes, LM4835MT is suitable for portable devices like smartphones, tablets, and portable speakers due to its low power consumption.
Q: Does LM4835MT require any external components? A: Yes, LM4835MT requires a few external components such as capacitors, resistors, and input/output coupling capacitors for proper operation.
Q: What is the voltage range for the power supply of LM4835MT? A: The recommended power supply voltage range for LM4835MT is typically between 2.7V and 5.5V.
Q: Can LM4835MT drive headphones directly? A: Yes, LM4835MT has a dedicated headphone driver circuitry that allows it to drive headphones directly without the need for an additional amplifier.
Q: Is LM4835MT capable of driving multiple speakers? A: Yes, LM4835MT can drive two speakers simultaneously in a stereo configuration.
Q: What is the input impedance of LM4835MT? A: The input impedance of LM4835MT is typically 20 kohms, which makes it compatible with various audio sources.
Q: Can LM4835MT be used in automotive audio systems? A: Yes, LM4835MT is suitable for automotive audio applications as it can operate over a wide temperature range and has built-in protection features.
Q: Are there any application notes or reference designs available for LM4835MT? A: Yes, the manufacturer of LM4835MT provides application notes and reference designs that can help in implementing the IC in different technical solutions.
Please note that these answers are general and may vary depending on specific design considerations and requirements.